Analysis of rail corrugation in cornering

Daniel, W.J.T., Horwood, R.J., Meehan, P. A. and Wheatley, N. (2008) Analysis of rail corrugation in cornering. Wear, 265 9-10: 1183-1192. doi:10.1016/j.wear.2008.02.030


Author Daniel, W.J.T.
Horwood, R.J.
Meehan, P. A.
Wheatley, N.
Title Analysis of rail corrugation in cornering
Journal name Wear   Check publisher's open access policy
ISSN 0043-1648
Publication date 2008-02-01
Year available 2008
Sub-type Article (original research)
DOI 10.1016/j.wear.2008.02.030
Open Access Status
Volume 265
Issue 9-10
Start page 1183
End page 1192
Total pages 9
Editor IM Hutchings
Place of publication Netherlands
Publisher Elseiver BV
Language eng
Subject 0913 Mechanical Engineering
970102 Expanding Knowledge in the Physical Sciences
C1
Abstract Rail corrugation in cornering is examined via a non-linear time-domain model of a bogie cornering. The model is computationally fast due to a modal description of a wheelset that includes bending and twisting modes of its axle as well as flexing of wheel hubs. The modal wheelset model is tuned to match finite element predictions of its natural frequencies. The rails are also modelled using modal parameters found by fitting field measured receptance data. The model predicts corrugation over a range of wavelengths from one wavelength per sleeper to shorter wavelengths below 100 mm. It is found that a range of wavelengths around 100 mm, can be excited on a curve of 300 m radius, in addition to longer wavelengths associated more with track or primary suspension dynamics. The mix of frequencies present changes as corrugation grows, the wavelengths around 100 mm dominating at later times. Stick-slip between wheel and rail is evident, especially on the leading axle, and contributes to both long and shorter wavelength corrugation. The shorter wavelengths relate to a peak lateral response of the track, and a minimum vertical response. The sliding oscillation causing wear is mainly a stick-slip oscillation of lateral creep. Parametric excitation from crossing sleepers is represented by changing the track parameters. It is shown that sleeper crossing excitation can have an important influence on the extent of stick-slip oscillation, especially with stiff railpads on concrete sleepers, and a coefficient of friction that decreases with increased sliding.
Keyword Rail corrugation
Rail dynamics
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2009 Higher Education Research Data Collection
School of Mechanical & Mining Engineering Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 11 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 16 times in Scopus Article | Citations
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Created: Wed, 08 Apr 2009, 00:36:41 EST by Heather Freeborn on behalf of School of Mechanical and Mining Engineering